ANSC_STATUS
BwrmPmoCancel
(
ANSC_HANDLE hThisObject
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_PAGE_MANAGER_OBJECT pMyObject = (PBWRM_PAGE_MANAGER_OBJECT )hThisObject;
PBWRM_PAGE_MANAGER_PROPERTY pProperty = (PBWRM_PAGE_MANAGER_PROPERTY )&pMyObject->Property;
PANSC_TIMER_DESCRIPTOR_OBJECT pCacheTimerObject = (PANSC_TIMER_DESCRIPTOR_OBJECT)pMyObject->hCacheTimerObject;
if ( !pMyObject->bActive )
{
return ANSC_STATUS_SUCCESS;
}
else
{
pMyObject->bActive = FALSE;
}
pCacheTimerObject->Stop((ANSC_HANDLE)pCacheTimerObject);
pMyObject->DelAllPages((ANSC_HANDLE)pMyObject);
return ANSC_STATUS_SUCCESS;
}
ANSC_STATUS
BwrmEcoRamGetCookedPage
(
ANSC_HANDLE hThisObject,
char* root_path,
char* page_path,
ANSC_HANDLE* phCookedPage
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_ENV_CONTROLLER_OBJECT pMyObject = (PBWRM_ENV_CONTROLLER_OBJECT )hThisObject;
PBWRM_ENV_CONTROLLER_PROPERTY pProperty = (PBWRM_ENV_CONTROLLER_PROPERTY)&pMyObject->Property;
PBWRM_PAGE_MANAGER_OBJECT pBwrmPageManager = (PBWRM_PAGE_MANAGER_OBJECT )pMyObject->hBwrmPageManager;
*phCookedPage =
pBwrmPageManager->GetPage
(
(ANSC_HANDLE)pBwrmPageManager,
root_path,
page_path
);
if ( !*phCookedPage )
{
return ANSC_STATUS_CANT_FIND;
}
return ANSC_STATUS_SUCCESS;
}
ANSC_STATUS
BwrmEcoRamAddCookedPage
(
ANSC_HANDLE hThisObject,
char* root_path,
char* page_path,
ANSC_HANDLE hCookedPage
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_ENV_CONTROLLER_OBJECT pMyObject = (PBWRM_ENV_CONTROLLER_OBJECT )hThisObject;
PBWRM_ENV_CONTROLLER_PROPERTY pProperty = (PBWRM_ENV_CONTROLLER_PROPERTY)&pMyObject->Property;
PBWRM_PAGE_MANAGER_OBJECT pBwrmPageManager = (PBWRM_PAGE_MANAGER_OBJECT )pMyObject->hBwrmPageManager;
returnStatus =
pBwrmPageManager->AddPage
(
(ANSC_HANDLE)pBwrmPageManager,
root_path,
page_path,
hCookedPage
);
return returnStatus;
}
ANSC_STATUS
BwrmPmoRemove
(
ANSC_HANDLE hThisObject
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_PAGE_MANAGER_OBJECT pMyObject = (PBWRM_PAGE_MANAGER_OBJECT )hThisObject;
PANSC_TIMER_DESCRIPTOR_OBJECT pCacheTimerObject = (PANSC_TIMER_DESCRIPTOR_OBJECT)pMyObject->hCacheTimerObject;
PANSC_TDO_CLIENT_OBJECT pCacheTimerClient = (PANSC_TDO_CLIENT_OBJECT )pMyObject->hCacheTimerClient;
pMyObject->Cancel((ANSC_HANDLE)pMyObject);
pMyObject->Reset ((ANSC_HANDLE)pMyObject);
if ( pCacheTimerObject )
{
pCacheTimerObject->Remove((ANSC_HANDLE)pCacheTimerObject);
pMyObject->hCacheTimerObject = (ANSC_HANDLE)NULL;
}
if ( pCacheTimerClient )
{
AnscFreeMemory(pCacheTimerClient);
pMyObject->hCacheTimerClient = (ANSC_HANDLE)NULL;
}
AnscFreeLock(&pMyObject->CpoTableLock);
AnscCoRemove((ANSC_HANDLE)pMyObject );
return ANSC_STATUS_SUCCESS;
}
ANSC_STATUS
BwrmPmoAddPage
(
ANSC_HANDLE hThisObject,
char* root_path,
char* file_path,
ANSC_HANDLE hCookedPage
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_PAGE_MANAGER_OBJECT pMyObject = (PBWRM_PAGE_MANAGER_OBJECT )hThisObject;
PBWRM_PAGE_MANAGER_PROPERTY pProperty = (PBWRM_PAGE_MANAGER_PROPERTY )&pMyObject->Property;
PANSC_TIMER_DESCRIPTOR_OBJECT pCacheTimerObject = (PANSC_TIMER_DESCRIPTOR_OBJECT)pMyObject->hCacheTimerObject;
PBWRM_COOKED_PAGE_OBJECT pCookedPage = (PBWRM_COOKED_PAGE_OBJECT )hCookedPage;
ULONG ulHashIndex = (ULONG )AnscHashString(file_path, AnscSizeOfString(file_path), BWRM_PMO_CPO_TABLE_SIZE);
ULONG ulPageCount = 0;
ULONG ulCurTime = AnscGetTickInSeconds();
pMyObject->Timestamp = ulCurTime;
pCookedPage->SetRootPath ((ANSC_HANDLE)pCookedPage, root_path);
pCookedPage->SetPagePath ((ANSC_HANDLE)pCookedPage, file_path);
pCookedPage->SetTimestamp((ANSC_HANDLE)pCookedPage, ulCurTime);
pCookedPage->IncRefCount ((ANSC_HANDLE)pCookedPage );
AnscAcquireLock (&pMyObject->CpoTableLock);
AnscSListPushEntry(&pMyObject->CpoTable[ulHashIndex], &pCookedPage->Linkage);
AnscReleaseLock (&pMyObject->CpoTableLock);
if ( TRUE )
{
ulPageCount = pMyObject->GetPageCount((ANSC_HANDLE)pMyObject);
if ( ulPageCount == 1 )
{
pCacheTimerObject->Start((ANSC_HANDLE)pCacheTimerObject);
}
else if ( ulPageCount > pProperty->CacheEntryCount )
{
pCookedPage = (PBWRM_COOKED_PAGE_OBJECT)pMyObject->GetOldestPage((ANSC_HANDLE)pMyObject);
if ( pCookedPage && 0 == pCookedPage->GetRefCount((ANSC_HANDLE)pCookedPage) )
{
returnStatus =
pMyObject->DelPage
(
(ANSC_HANDLE)pMyObject,
pCookedPage->GetRootPath((ANSC_HANDLE)pCookedPage),
pCookedPage->GetPagePath((ANSC_HANDLE)pCookedPage)
);
}
}
}
return ANSC_STATUS_SUCCESS;
}
ULONG
BwrmEcoRamGetCacheTimeout
(
ANSC_HANDLE hThisObject
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_ENV_CONTROLLER_OBJECT pMyObject = (PBWRM_ENV_CONTROLLER_OBJECT )hThisObject;
PBWRM_ENV_CONTROLLER_PROPERTY pProperty = (PBWRM_ENV_CONTROLLER_PROPERTY)&pMyObject->Property;
PBWRM_PAGE_MANAGER_OBJECT pBwrmPageManager = (PBWRM_PAGE_MANAGER_OBJECT )pMyObject->hBwrmPageManager;
return pBwrmPageManager->GetCacheTimeout((ANSC_HANDLE)pBwrmPageManager);
}
ANSC_STATUS
BwrmEcoRamControlCache
(
ANSC_HANDLE hThisObject,
ULONG ctrl_code
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_ENV_CONTROLLER_OBJECT pMyObject = (PBWRM_ENV_CONTROLLER_OBJECT )hThisObject;
PBWRM_ENV_CONTROLLER_PROPERTY pProperty = (PBWRM_ENV_CONTROLLER_PROPERTY)&pMyObject->Property;
PBWRM_PAGE_MANAGER_OBJECT pBwrmPageManager = (PBWRM_PAGE_MANAGER_OBJECT )pMyObject->hBwrmPageManager;
switch ( ctrl_code )
{
case BWRM_RAM_CTRL_CODE_enable :
returnStatus =
pBwrmPageManager->SetCacheEnabled
(
(ANSC_HANDLE)pBwrmPageManager,
TRUE
);
break;
case BWRM_RAM_CTRL_CODE_disable :
returnStatus =
pBwrmPageManager->SetCacheEnabled
(
(ANSC_HANDLE)pBwrmPageManager,
FALSE
);
break;
case BWRM_RAM_CTRL_CODE_reset :
returnStatus = pBwrmPageManager->DelAllPages((ANSC_HANDLE)pBwrmPageManager);
break;
default :
returnStatus = ANSC_STATUS_UNAPPLICABLE;
break;
}
return returnStatus;
}
ANSC_STATUS
BwrmPmoDelPage
(
ANSC_HANDLE hThisObject,
char* root_path,
char* file_path
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_PAGE_MANAGER_OBJECT pMyObject = (PBWRM_PAGE_MANAGER_OBJECT )hThisObject;
PBWRM_PAGE_MANAGER_PROPERTY pProperty = (PBWRM_PAGE_MANAGER_PROPERTY )&pMyObject->Property;
PANSC_TIMER_DESCRIPTOR_OBJECT pCacheTimerObject = (PANSC_TIMER_DESCRIPTOR_OBJECT)pMyObject->hCacheTimerObject;
PBWRM_COOKED_PAGE_OBJECT pCookedPage = (PBWRM_COOKED_PAGE_OBJECT )NULL;
PSINGLE_LINK_ENTRY pSLinkEntry = (PSINGLE_LINK_ENTRY )NULL;
ULONG ulHashIndex = (ULONG )AnscHashString(file_path, AnscSizeOfString(file_path), BWRM_PMO_CPO_TABLE_SIZE);
AnscAcquireLock(&pMyObject->CpoTableLock);
pSLinkEntry = AnscSListGetFirstEntry(&pMyObject->CpoTable[ulHashIndex]);
while ( pSLinkEntry )
{
pCookedPage = ACCESS_BWRM_COOKED_PAGE_OBJECT(pSLinkEntry);
pSLinkEntry = AnscSListGetNextEntry(pSLinkEntry);
if ( pCookedPage->MatchPath
(
(ANSC_HANDLE)pCookedPage,
root_path,
file_path
) )
{
AnscSListPopEntryByLink(&pMyObject->CpoTable[ulHashIndex], &pCookedPage->Linkage);
pCookedPage->Remove((ANSC_HANDLE)pCookedPage);
break;
}
}
AnscReleaseLock(&pMyObject->CpoTableLock);
if ( pMyObject->GetPageCount((ANSC_HANDLE)pMyObject) == 0 )
{
pCacheTimerObject->Stop((ANSC_HANDLE)pCacheTimerObject);
}
return ANSC_STATUS_SUCCESS;
}
ANSC_STATUS
BwrmPmoCacheTimerInvoke
(
ANSC_HANDLE hThisObject
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_PAGE_MANAGER_OBJECT pMyObject = (PBWRM_PAGE_MANAGER_OBJECT )hThisObject;
PBWRM_PAGE_MANAGER_PROPERTY pProperty = (PBWRM_PAGE_MANAGER_PROPERTY )&pMyObject->Property;
PANSC_TIMER_DESCRIPTOR_OBJECT pCacheTimerObject = (PANSC_TIMER_DESCRIPTOR_OBJECT)pMyObject->hCacheTimerObject;
ULONG ulCurTime = AnscGetTickInSeconds();
if ( (ulCurTime - pMyObject->Timestamp) > pProperty->CacheTimeout )
{
pMyObject->DelAllPages((ANSC_HANDLE)pMyObject);
}
return ANSC_STATUS_SUCCESS;
}
ANSC_STATUS
BwrmEcoRamSetCacheSize
(
ANSC_HANDLE hThisObject,
ULONG cache_size
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_ENV_CONTROLLER_OBJECT pMyObject = (PBWRM_ENV_CONTROLLER_OBJECT )hThisObject;
PBWRM_ENV_CONTROLLER_PROPERTY pProperty = (PBWRM_ENV_CONTROLLER_PROPERTY)&pMyObject->Property;
PBWRM_PAGE_MANAGER_OBJECT pBwrmPageManager = (PBWRM_PAGE_MANAGER_OBJECT )pMyObject->hBwrmPageManager;
returnStatus =
pBwrmPageManager->SetCacheMemorySize
(
(ANSC_HANDLE)pBwrmPageManager,
cache_size
);
return returnStatus;
}
ANSC_STATUS
BwrmPmoInitialize
(
ANSC_HANDLE hThisObject
)
{
ANSC_STATUS returnStatus = ANSC_STATUS_SUCCESS;
PBWRM_PAGE_MANAGER_OBJECT pMyObject = (PBWRM_PAGE_MANAGER_OBJECT)hThisObject;
ULONG i = 0;
/*
* Until you have to simulate C++ object-oriented programming style with standard C, you don't
* appreciate all the nice little things come with C++ language and all the dirty works that
* have been done by the C++ compilers. Member initialization is one of these things. While in
* C++ you don't have to initialize all the member fields inherited from the base class since
* the compiler will do it for you, such is not the case with C.
*/
AnscCoInitialize((ANSC_HANDLE)pMyObject);
/*
* Although we have initialized some of the member fields in the "create" member function, we
* repeat the work here for completeness. While this simulation approach is pretty stupid from
* a C++/Java programmer perspective, it's the best we can get for universal embedded network
* programming. Before we develop our own operating system (don't expect that to happen any
* time soon), this is the way things gonna be.
*/
pMyObject->Oid = BWRM_PAGE_MANAGER_OID;
pMyObject->Create = BwrmPmoCreate;
pMyObject->Remove = BwrmPmoRemove;
pMyObject->EnrollObjects = BwrmPmoEnrollObjects;
pMyObject->Initialize = BwrmPmoInitialize;
pMyObject->Timestamp = AnscGetTickInSeconds();
pMyObject->bActive = FALSE;
pMyObject->GetCacheEnabled = BwrmPmoGetCacheEnabled;
pMyObject->SetCacheEnabled = BwrmPmoSetCacheEnabled;
pMyObject->GetCacheEntryCount = BwrmPmoGetCacheEntryCount;
pMyObject->SetCacheEntryCount = BwrmPmoSetCacheEntryCount;
pMyObject->GetCacheMemorySize = BwrmPmoGetCacheMemorySize;
pMyObject->SetCacheMemorySize = BwrmPmoSetCacheMemorySize;
pMyObject->GetCacheTimeout = BwrmPmoGetCacheTimeout;
pMyObject->SetCacheTimeout = BwrmPmoSetCacheTimeout;
pMyObject->GetProperty = BwrmPmoGetProperty;
pMyObject->SetProperty = BwrmPmoSetProperty;
pMyObject->ResetProperty = BwrmPmoResetProperty;
pMyObject->Reset = BwrmPmoReset;
pMyObject->Engage = BwrmPmoEngage;
pMyObject->Cancel = BwrmPmoCancel;
pMyObject->CacheTimerInvoke = BwrmPmoCacheTimerInvoke;
pMyObject->GetPageCount = BwrmPmoGetPageCount;
pMyObject->GetOldestPage = BwrmPmoGetOldestPage;
pMyObject->GetPage = BwrmPmoGetPage;
pMyObject->AddPage = BwrmPmoAddPage;
pMyObject->DelPage = BwrmPmoDelPage;
pMyObject->DelAllPages = BwrmPmoDelAllPages;
for ( i = 0; i < BWRM_PMO_CPO_TABLE_SIZE; i++ )
{
AnscSListInitializeHeader(&pMyObject->CpoTable[i]);
}
AnscInitializeLock(&pMyObject->CpoTableLock);
/*
* We shall initialize the configuration properties to the default values, which may be changed
* later via the set_property() member function. Note that this call may not guarantee a valid
* and legtimate configuration.
*/
pMyObject->ResetProperty((ANSC_HANDLE)pMyObject);
return ANSC_STATUS_SUCCESS;
}
